The EX Series is positioned as backup to disk (B2D) appliances. The ExaGrid system was originally designed as a Scale-Out NAS system but has since been optimized to be a backup to disk target. Since the system presents a standard NFS or CIFS/SMB interface, it can also support other file-based applications, especially secondary storage workloads.
Each appliance has a fixed amount of processing power and storage capacity, simplifying configuration decisions. There are nine different models starting with the EX3000 and growing to the EX63000E. Any generation of any model can be intermixed in a single grid, up to the current limit of 32 nodes. By adding appliances to the grid, performance and capacity scale together. The ExaGrid system will automatically balance the data among the nodes when new ones are added to the grid.
The most recent backup copy is kept in a complete, un- deduplicated form in order to speed recovery of VMs, full systems, or files. ExaGrid refers to this capability as the Landing Zone. Local restores, instant VM recoveries, audit copies and even tape copies do not require rehydration. Deduplication and replication are performed in parallel with backup jobs from the Landing Zone to the backend storage of the system. Only deduplicated data is replicated. ExaGrid’s positioning is that this provides the fastest backup with the shortest window when compared to inline deduplication systems.
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